Process for manufacturing tobacco-paper from pure tobacco-stems and product resulting therefrom.



UNI'IED @TATES i 'AfljENT ()FFICE FELICI'I GIORDANO, 0F GENOA. ITALY;

PROCESS FOR MANUFACTURING 'iOfBACCO-IILPER FRQM LP'URIL TOBACCO-STEMS 'AND PRODUCT RESUL'IING 'lH'PlREFIt-OM.

No Drawing.

To all viz/mum! mm; concern.

Be It known that .l'. l ntnir. (l'IUHlI-ANU,

lLSltl!l[ of 26 Viri Vent? gm. Henna, Italy, have invented a certain ll: v illitl fut Pl'OCQSr} for B/i uuuincimlug 'liulii-uxco per from Pure 'ifolmrcnfiteml; ,illil lmrhiut to suiting Th :refs'cm. all whi h the foli z'ing 1&5: a. spin-1i. lion.

The object of my pre erit invm'ti n provide tl at-o0 for YlmittlfifiiitlLll"2 from pure tobaccoior use with cigarettes and :1 further object V dnce an improi'erl product. as s ova-nit of aid process.

.-i-\.c:cor(lingto my new process I subject the stems of tobacco leaves to a very fine cornminution. so as to reduce them to e pz'zste. This is obtained by ineerting them int-w n vcssclof hot wnter where they are com pletely softened anti w; tell hy leaving them in the saitl .vesscls for stunts hours, whet-mum they are: reduced. to n con'zpnrativel. v fine nu l homogeneous paste in any euitnhie 12;,

' tus. The said pa. 1S 5 l -itnixiolly posed of two ingredients viz; fibrous light colored part canton. no; cellulose and gummy substances or hydrot-mrbouates; ---=1nd a. non-fibrous darker colored pert contain ing most of the re sinous end incruetating substances. )1 the said. two parts only the former is adapted to be transformed into paper, while the other must be completely eliminated, which very simply and rapidly performed by ordinary Wahing-qrlindern with wire gnuzedrums, or in any other-suit able manner, the fibrous part settling in the tank of the apparatus while the otht r is carried oil by the water throu h the wire gauze of the washing drum. n this very important step of my IJI'OLQ-"vS a material loss is experienced which will he the greater the higher is the iiegrce of comminution given to the paste. On attempting to diminish such loss an inferior product would be obtained, anq in the subsequent chemical steps of my process less good paste would he obtqinerl. Practicgllv good results will be obtained by losingfiiboutone'quartcr of the weight of the stems. Only after this first mechanical step of my process the paste is ado-phi to undergo the chemical treat ment. The water will be drained from the .cylinder Whereonly the paste is left.

Specification of Letters Patent.

Application filed I'zwember 2S. 1908. Serial No. 164-1340.

.l-iatented Aug. 8, 1911..

' Ell-illicit; still remaining therein, loaving t 9 cclhiloswc or fibrous: substance and the gummy orhy|lrocerlmnntwof the tobacco iich latter give the paper the. rehini lng run} many qualities oflthe 10! Th': s-znirl chemical ireat;

- with caustic :m 1nl .l sisal t iii ewhich we [mi tmrit is gnrfc. 'shly crzrricri the same cylinder in which the washing ltfl'vl been performed, without; trmnst'crring the paste, and then it will be covered it neciessmry. In the'said' cylinder 21 solution of caustic soda in water in the gnnportion of about introduced and. tar-n hunter? to TO C. The to 7B haw: in. p {hair-or s mixed with the 'i left ifl'lttl'.

. for some hours is smnmnrilv wnshetlnnd the (imincrl off. nr-z the first time. A 'reecond hCLlUllOil of about 1% of s'ulfite on bisulfitc of sodium is thereupon poured on'i the paste, and further a quantity-"0f about- 10 volumes of sulfm'ons acid gas. In this solution the paste is equally left. for some i hours and slightly heated. After the said 1 6 SetfiOii-Tll chemical step the paete is thoroughly washed and then subjected to the necessary refinement. The fibrous paste thus obtained 1 is directly transformed into paper byfnny"; suitable machine. The paper thus obtained needs no further treatment such as gluing, l, etc, but is ready to be cut; into therequired 1. lengths. This paper has alight tobacco color. If desired to obtain white paper, be: tween the first chemical treatment with caustic soda and the second with sulfite, bisulfitc or sulfurous acid; a. filtered solu tion of about 1 kg. of calcium chlorid to 30 kg. of water is added to the paste, which is thus left for say 1.0 hours. The paste thus F obtained is converted'to paper in the same m'anner as the other. If on the other hand j it in desired to give the paper the exact color l mid odor of tobacco it may be treated in a}.

balm of a suitable tobacco extract. 1

Having now fully described my said in i vention and the manner in which the some is to he performed, what I claim'and desire to secure by Letters; Patent of the Unit ed States of America is:

for numufacturing tobacco paper from tobacco stems, comprising the following steps: comininuting the stems so as to reduce them to a paste, eliminating the resinous and incrustating substances therefrom to as great a degree as possible by a mechanical means, eliminating any remaining incrustating substances therefrom by a heated solution of caustic soda of 1%, draining oil the solution, washing the paste, pouring a solution of sulfite of sodium and sulfu'rous acid gas on the paste, heating it slightly, washing it again, refining it, and. transforming it to paper, substantially as described.

.3. Process for manufacturing tobacco paper from tobacco stems, comprising the following steps: comminuting the stems so as to reduce them to a paste, eliminating the resinous and incrustating substances therefrom to as great a degree as possible by a mechanical means, eliminating any re maining incrustating substances therefrom by a solution of caustic soda heated to 80 (1., draining oil the solution, washing the paste, curing a solution of sulfite of -'soclium and sulfurous acid gas on the jpaste, heating it slightly and leaving it, washing it again, refining it, and transforming it to paper, substantiallyas described.

4. Process for manufacturing tobacco paper from tobacco stems, comprising the ollowing-steps: eomminuting the stems so Its-"to reduce them toa paste, eliminating the resinous and incrustating substances therefrom to as great a. dcgr'ro as possible by a mechanical means, eliminating any remaining incrust-a-tin substmuzus therefrom by a 1% solution 0 caustic la heated to 70-80 (1., draining ofl the lion, w: shing the paste, pouring a solzu ou of sulfite of sodium and sulfurous ruizi gas on the paste, heating it. slightly and leaving it, washing it again, refining it, and transforming it to paper, substantially as described.

5. Process for manufacturing tobacco paper from tobacco stems, comprising the following steps: comminuting the stems so as to reduce them to a paste, eliminating the resinous and incrustating substances therefrom to as great a (l0l"I'1 tas possible by a mechanical means. eliminating any remaining incrust-uting substances tlurrolrmn by a heated solution of caustic soda, draining oil the solution. washing the paste. pouring a 1% solution of sulfite of sodium. and sulfurous acid gas on the paste, heating it slightly and leaving it, washing it again. refining it, and transforming it: to paper, substantially as described.

6. Process for manufacturing White tohacco paper from tobacco stems, comprising the following steps: comminuting the stems so as to reduce them to a paste, eliminating the resinous and incrustating substances therefrom to as great a degree as posslblc by a mechanical means, eliminating any remaining incrustatiug substances therefrom by a heated solution of caustic soda, draining off the solution. adding a filtered water solution of calcium chlorid. leaving it, drain ing oil'" the solution, Washing the paste, pouring a solution of sulfite of sodium and sulfurous acid gas on the paste. heating it slightly and leaving it, washing it again, re fining it, and transforming it to paper, sub stantially as described.

In testimony whereof I have aflixed my signature in presence of two witnesses.

FELIOE GIORDANO.

Witnesses:

T110. Ronasco, E. M. BAUER. 

